JP2006300413A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator capable of obtaining effective heat insulating action at a low cost with the reduced panel size of a vacuum heat insulating panel by disposing the position of a cooler for a freezing cycle together with the arrangement of respective storage chambers in freezing and refrigerating spaces in a body. <P>SOLUTION: The refrigerator is provided with freezing and refrigerating coolers 13, 14 for exclusively cooling a freezing storage space 11 and a refrigerating storage space 12 respectively, and cold air circulating fans 15, 16. A refrigerating chamber 5 is disposed at an upper part in the storage chamber, and a vegetable chamber 9 is disposed at a lowermost part. Between these chambers, a freezing chamber 9 which is the freezing storage space, an ice making chamber 6, and a temperature switching chamber 7 are adjacently arranged, and the freezing and refrigerating coolers are closely arranged at the back face of the freezing storage space. The vacuum heat insulating material 31 is disposed in a heat insulating wall 4 to surround the respective coolers and the freezing storage space. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a refrigerator having a refrigerated storage space and a refrigerated storage space and provided with a cooler for cooling them and a cold air circulation fan.

  As shown in the vertical sectional view of FIG. 8 in recent years, a refrigerator room (55) having the highest frequency of use and a large volume is disposed at the top, and a similar refrigerator space is provided below to store vegetables. There are many types in which a vegetable room (59) is provided, an ice making room (56) and a temperature switching room (not shown) are juxtaposed, and a freezing room (58) is arranged at the lowest position.

  A refrigeration cooler (63) and a fan (65) for cooling the refrigeration space are arranged on the back of the refrigeration room (55), and an ice making room (at a position corresponding to the back of the freezer room (58) below) 56) and a freezing cooler (64) and a fan (66) for cooling the freezing space such as the freezing room (58), and a refrigerant from the compressor (82) provided in the machine room at the bottom of the main body. Are alternately introduced into the refrigeration and refrigeration coolers (63) and (64) by a switching valve, and the generated cool air is cooled to a predetermined temperature by the fans (65) and (66). I tried to circulate it.

The refrigeration and refrigeration coolers (63) and (64) are each cooled to a low temperature in the vicinity of -20 ° C. Therefore, it is necessary to reliably insulate the outside air from the outside, and increase the storage volume efficiency of the storage chamber with respect to the outer shape. For this reason, a vacuum heat insulation panel (71) having a predetermined thickness as shown in Patent Document 1 is arranged in a heat insulation wall (70) made of a foam heat insulating material such as urethane foam.
JP-A-2005-69448

  However, as described above, the conventional refrigerator has a refrigeration cooler (63) and a refrigeration cooler (64), a refrigeration chamber (55) at the top of the main body, a vegetable room (59), and an ice making room, respectively. In order to cover both coolers (63) (64), it is placed in the back of the freezer compartment (58) placed at the bottom via (56), so as to cover both coolers (63) (64) Compared to (70), it is necessary to dispose the vacuum heat insulation panel (71), which is more expensive than the entire rear surface, and there is a problem that the manufacturing cost increases. Moreover, when it arrange | positions separately on the upper and lower sides, since a heat insulation panel becomes 2 parts and becomes expensive, and a complicated manufacturing assembly man-hour increases, it was unavoidable that it becomes high cost similarly to the above.

  The present invention has been made in consideration of the above circumstances, and by arranging the vacuum heat insulation panel in accordance with the position of the refrigerator of the refrigeration cycle together with the arrangement of each storage room of the refrigeration and refrigeration space in the main body, An object of the present invention is to provide a refrigerator capable of reducing the panel size and obtaining an effective heat insulating action at low cost.

  In order to solve the above-mentioned problem, the invention described in claim 1 is a refrigerator having a refrigerated storage space and a refrigerated storage space and provided with a cooler for cooling these spaces and a cold air circulation fan. A vacuum heat insulating material is disposed on at least the back surface of the surrounding heat insulating wall covering the cooler. The invention according to claim 2 is a refrigerator provided with a refrigeration and refrigeration cooler for cooling the refrigeration storage space and the refrigeration storage space, respectively, and each cold air circulation fan. Are disposed in close proximity to each other, and a vacuum heat insulating material is disposed on at least the back surface of the surrounding heat insulating wall that surrounds the cooler and the frozen storage space. In a refrigerator provided with a freezing and refrigeration cooler that cools the storage space and the refrigerated storage space, respectively, and a cold air circulation fan, a refrigeration room is placed in the upper part of the storage room, and a vegetable room is placed in the lowermost part. A freezing room, an ice making room, and a temperature switching room, which are freezing storage spaces, are disposed adjacent to each other, and the freezing and refrigeration coolers are disposed close to the back of the freezing storage space, and each of these coolings That it was provided with vacuum heat insulating material in the heat insulating wall so as to surround the frozen storage space and is characterized in.

  According to the first aspect of the present invention, the vacuum heat insulation panel can be effectively arranged with the minimum size, the cost can be reduced and the storage capacity can be expanded by obtaining an efficient heat insulation structure. According to the second aspect of the present invention, space can be saved by concentrating and arranging the refrigeration and refrigeration coolers, and these and the vacuum thermal insulation panel can be arranged in an effective thermal insulation configuration relationship. Moreover, according to the invention of Claim 3, each storage room can be arrange | positioned in the optimal heat insulation wall relationship with each cooler for refrigeration and freezing, and it can be conveniently used as a refrigerator.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view of a refrigerator, and FIG. 2 is a front view thereof. The refrigerator is composed of an outer box (2), an inner box (3), and a heat insulating material (4) filled in a space between these inner and outer boxes. The refrigerator body (1) formed of a heat-insulated box body is used as a storage space with the refrigerator compartment (5) at the top, and the ice-making room (6) equipped with an automatic ice maker below the insulation partition wall (10). And a temperature switching chamber (7), and a freezing chamber (8) below them and a vegetable chamber (9) at the bottom are independently arranged. A heat insulating partition wall (10) is also provided between the freezer compartment (8) and the vegetable compartment (9), and a dedicated door is provided at the front opening of each storage compartment so as to be freely opened and closed. .

  And in the back of the frozen storage space (11) in which the freezing room (8), the ice making room (6), the temperature switching room (7) and the like in the central part of the main body are centrally arranged, a refrigerator room (5) and a vegetable room ( 9) the refrigeration cooler (13) for cooling the refrigerated storage space (12) and the refrigeration cooler (14) for cooling the refrigerated storage space are arranged vertically adjacent to each other and shifted from side to side. With this configuration, the refrigeration fan (14) can be installed at the top of the refrigeration cooler (14), and the refrigeration fan (15) can be installed above the refrigeration cooler (13). The cooler compartment (17) is the back of the refrigerator storage space (11), and each cooler and fan can be assembled and arranged. The cool air generated by each cooler is blown through a duct, The storage space is cooled to a predetermined temperature.

  Accordingly, the refrigerator compartment (5) and the vegetable compartment (9), which are the refrigerator storage space (12), are divided into the upper and lower positions of the frozen storage space (11). As shown in FIG. 3, which is a schematic diagram of a duct showing the cooling air circulation path of each storage space (12), the cooling air (12) is cooled by the cold air generated by the refrigeration cooler (13). Each shelf is led from the cold air outlet (36) and the air outlets formed on the lower sides of the back side through the cold air duct (29) by the refrigeration fan (15) to the upper back of the cold room (5). The air is blown into the refrigerator compartment (5). And the cold air which circulated through the refrigerator compartment (5), and was cooled is made to flow into the lower communicating port (37), and it goes down via the communicating duct (38) formed in the heat insulation space of the freezing storage space (11) side part. After leading to the vegetable room (9) and cooling the room, it is configured to return from the suction port (39) to the refrigeration cooler (13).

  On the freezing side, the cold air generated by the freezing cooler (14) and the freezing fan (16) arranged at the back of the freezing storage space (11) is used as freezing room (5) or ice making room (6). The air is discharged from each outlet (40) provided in each of the temperature switching chambers (7) into the respective chambers for circulation cooling.

  The vegetable room (9) is located in front of the lowermost machine room (20) according to the above configuration, but the vegetable room temperature is about 4 ° C, the highest among the storage room temperatures, and the temperature is high. Since the temperature difference from the machine room (20) is small compared to other storage rooms, the heat leakage is much less than the type in which the freezer room (8) is placed at the bottom in the cabinet, It is possible to reduce power consumption. In the above description, the refrigeration fan (15) is installed in the upper part of the refrigeration chamber (5), but this is installed in the vicinity of the heat insulating partition wall (10) in the upper part of the refrigeration cooler (13). You may make it arrange | position to a back surface, and it may be made to divide into the room | chamber interior from the blower outlet of the duct formed for every shelf step of a refrigerator compartment (5) back surface, and it may blow off.

  The refrigeration cooler (13) and the refrigeration cooler (14) are separated from each other by a molded heat insulating material (18) forming a cooler chamber (17), and are independent cold air flow paths. In addition, the drainage device (19), such as a dew trap that receives defrost water and discharges it to the outside of the warehouse, is located close to the refrigerator (13) (14) for refrigeration and freezing. Because it is arranged, it should be installed as a common device for both.

  As shown in FIG. 4, each of the storage chambers includes a compressor (22), a condenser (23), and a refrigerant flow switching device installed in a machine chamber (20) formed on the lower back surface of the main body. (24) to form a circuit for connecting the first expansion device (25) and the refrigeration cooler (13) on the high temperature side in series to return to the compressor (22), and the three-way valve ( 24) to the refrigerating side circuit comprising the first throttling device (25) and the high temperature side cooler (13), the second throttling device (26) and the low temperature side freezing cooler (14), It is cooled by a refrigeration cycle (21) connected to a refrigeration side circuit in which an accumulator (27) and a check valve (28) are connected in order.

  Each pipe of the refrigeration cycle (21) connects the respective ends in the machine room (20) to form a cycle, and as a refrigerant, the ozone layer is not destroyed and the global warming potential is low, but it is combustible A hydrocarbon-based HC refrigerant such as isobutane is sealed.

  The three-way valve (24) causes the first throttling device (25) and the refrigeration cooler (13) to be detected by a temperature detected by a temperature sensor (not shown) provided in the refrigerator compartment (5), the freezer compartment (8), and the like. The flow path is switched alternately to the refrigeration side circuit consisting of or the refrigeration side circuit consisting of the second expansion device (26) and the refrigeration cooler (14), accumulator (27), and check valve (28) The refrigerator is supplied with a refrigerant for cooling, and the refrigerator (13) and the refrigerator (14) disposed in the vicinity of the refrigerator (14) are rotated by the fans (15) and (16), respectively. The refrigerated storage space such as (5) and the vegetable room (9) and the refrigerated storage space such as the freezing room (8) and the ice making room (6) on the low temperature side are independently controlled to be cooled to a predetermined temperature.

  The heat insulation wall (4) at the back of the freezer storage space (11) and the cooler room (17) has a vacuum insulation panel (30) together with a foam insulation (30) such as urethane foam. 31) is arranged in the insulating wall (4). This vacuum heat insulation panel (31) is made of glass wool, which is a thin fiberglass cotton material, made into a core material, and this core material is inserted into a gas barrier container made of a laminated film of aluminum foil and synthetic resin. The inside of the container is kept in a vacuum-reduced state by evacuating the inside at about 0.03 to 30 Pa and closing the opening, and has a thickness of 10 to 12 mm having a low thermal conductivity of about 0.002 W / mK. The panel is preliminarily bonded and held on the inner surface of the outer box (2) with hot melt, and when the foam insulation (30) is injected into the gap with the inner box (3) and filled with foam, It is embedded and fixed integrally in the material (30).

  The vacuum heat insulation panel (31) includes a space for the refrigeration and freezing coolers (13) and (14) provided adjacent to the upper and lower sides, an upper ice making chamber (6) which is a freezing space, and a temperature switching chamber ( 7) Further, it is arranged over a range covering the back of the lower freezer compartment (8).

  That is, the vacuum heat insulation panel (31) having a higher heat insulation performance than the foam heat insulating material (30), the refrigeration storage space (11) having the largest temperature difference between the inside and outside of the refrigerator body (1) and the low-temperature cooler ( 13) By facing the cooler chamber (17) where (14) is arranged, heat leakage can be prevented without increasing the heat insulation thickness, and the effective storage volume in the compartment is increased. Is something that can be done.

  In addition, the freezing storage space (11) has the freezing chamber (8), the ice making chamber (6) or the temperature switching chamber (7), which are the target storage chambers, concentrated, and the cooler chamber (17) has a low temperature. Since the refrigeration cooler (14) and the refrigeration cooler (13) are arranged adjacent to each other, the size of the vacuum heat insulation panel (31) necessary to cover them is half that of the conventional full arrangement. A minimum area of 1 or less is sufficient, and heat leakage can be prevented at low cost without waste.

  Also, the freezer compartment (8) is not located at the lowermost position, but is concentrated in the freezer storage space such as another ice making room (6) and placed in the center of the main body. ) Is also located at the center of the main body, so that it is difficult to place a vacuum insulation panel, such as around the machine room (20) at the bottom of the main body. Since the surface of the box (2) is flat, the panel shape may be a simple flat plate shape, and there is an effect that it is possible to easily perform the attaching operation to the inner surface of the outer box.

  As shown in FIG. 5, the refrigeration cooler (13) and the refrigeration cooler (14) are juxtaposed to the left and right, and the refrigeration and refrigeration fans (15) (16) are installed at the top of each. However, the layout is not limited to this, and each of the coolers (13) and (14) may be arranged so as to overlap each other and each fan may be installed in the vicinity thereof.

  Further, the vacuum heat insulation panel (31) for the structure of the frozen storage space (11) and the cooler chamber (17) is not limited to the rear surface of the cooler chamber (17) as in the above embodiment, ) (33) As shown as (33), both sides of the outer box (2), the upper part of the ice making room (6) and the temperature switching room (7), and the heat insulating partition wall between the freezer room (8) and the vegetable room (9) Needless to say, it may be arranged on all of the heat insulating walls covering the periphery of the frozen storage space (11), such as (10). If arranged in this way, the coldest frozen storage space (11 ) And the cooler chamber (17) are covered with a highly insulating panel to greatly reduce heat leakage.

  In addition, as shown in FIG. 7, even in a type in which the freezing space and the refrigerated space are cooled by a single cooler (35), the cooler (35) is replaced with a freezing chamber (8), an ice making chamber (6), etc. The vacuum heat insulation panel (31) may be disposed at a position that covers the back of the cooler (35) on the back of the frozen storage space (11) that collects the components.

  INDUSTRIAL APPLICABILITY The present invention can be used in a refrigerator provided with a vacuum heat insulating panel provided with a cooler and a cold air circulation fan for cooling a frozen storage space and a refrigerated storage space.

It is a longitudinal cross-sectional view of the refrigerator which shows one Embodiment of this invention. It is a front view of the refrigerator of FIG. It is the schematic of the duct which shows the cold air circulation path | route of the freezer storage space in FIG. It is the schematic which shows the refrigerating cycle of the refrigerator in FIG. It is a refrigerator front view which shows the other Example of the cooler room structure of this invention. It is a longitudinal cross-sectional view of the refrigerator which shows the other arrangement | positioning structure of the vacuum heat insulation panel of this invention. It is a longitudinal cross-sectional view of the refrigerator which shows the other Example of this invention. It is a longitudinal cross-sectional view which shows the structure of the conventional refrigerator.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Refrigerator body 2 Outer box 4 Heat insulation wall 5 Refrigeration room 6 Ice making room 7 Temperature switching room 8 Freezing room 9 Vegetable room 10 Heat insulation partition wall
11 Refrigerated storage space 12 Refrigerated storage space 13 Refrigerated cooler
14 Refrigeration cooler 15, 16 Fan 17 Cooler room
18 Molded insulation 19 Drainage device 20 Machine room
21 Refrigeration cycle 22 Compressor 29 Cold air duct
30 Foam insulation 31, 32, 33 Vacuum insulation panel
36, 40 Air outlet 37 Communication hole 38 Communication duct
39 Suction port

Claims (4)

  In a refrigerator having a refrigerated storage space and a refrigerated storage space and provided with a cooler for cooling these spaces and a cold air circulation fan, a vacuum heat insulating material is provided on at least the back surface of the surrounding heat insulating wall covering the frozen storage space and the cooler The refrigerator characterized by having arranged.   In a refrigerator provided with a refrigeration and refrigeration cooler for cooling the refrigeration storage space and the refrigeration storage space, respectively, and each cold air circulation fan, the refrigeration and refrigeration coolers are arranged close to each other, and these coolers A vacuum heat insulating material is disposed on at least the back surface of the surrounding heat insulating wall that surrounds the frozen storage space.   In a refrigerator provided with a freezing and refrigeration cooler and a cold air circulation fan for cooling the freezing storage space and the refrigeration storage space respectively, a refrigeration room is arranged above the storage room, and a vegetable room is arranged at the bottom. A freezing room, an ice making room, and a temperature switching room, which are freezing storage spaces, are disposed adjacent to each other, and the freezing and refrigeration coolers are disposed close to the back of the freezing storage space. A refrigerator characterized in that a vacuum heat insulating material is disposed in a heat insulating wall so as to surround the storage space. 4. The refrigeration cooler and the refrigeration cooler provided adjacent to the back surface of the main body are arranged corresponding to the back surfaces of the freezing room, the ice making room, and the temperature switching room, respectively. Refrigerator.

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